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Ubuntu 11.04, 11.10 - USN-1333-1 Moderate: Libav Application Issues

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Calendar Grey January 17, 2012
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Ubuntu Security Notice USN-1333-1 highlights libav flaws that risk crashes or unauthorized code execution for users.
Libav could be made to crash or run programs as your login if it opened a specially crafted file.

Summary

Libav could be made to crash or run programs as your login if it opened a

specially crafted file.

Software Description:

- libav: Multimedia player, server, encoder and transcoder

Details:

Steve Manzuik discovered that Libav incorrectly handled certain malformed

Matroska files. If a user were tricked into opening a crafted Matroska

file, an attacker could cause a denial of service via application crash, or

possibly execute arbitrary code with the privileges of the user invoking

the program. This issue only affected Ubuntu 11.04. (CVE-2011-3504)

Phillip Langlois discovered that Libav incorrectly handled certain

malformed QDM2 streams. If a user were tricked into opening a crafted QDM2

stream file, an attacker could cause a denial of service via application

crash, or possibly execute arbitrary code with the privileges of the user

invoking the program. (CVE-2011-4351)

Phillip Langlois discovered that Libav incorrectly handled certain

malformed VP3 streams. If...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu arbitrary code application crash libav

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
  libavcodec53                    4:0.7.3-0ubuntu0.11.10.1
  libavformat53                   4:0.7.3-0ubuntu0.11.10.1

Ubuntu 11.04:
  libavcodec52                    4:0.6.4-0ubuntu0.11.04.1
  libavformat52                   4:0.6.4-0ubuntu0.11.04.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

https://ubuntu.com/security/notices/USN-1333-1

CVE-2011-3504, CVE-2011-4351, CVE-2011-4352, CVE-2011-4353,

CVE-2011-4364, CVE-2011-4579

January 17, 2012

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu arbitrary code application crash libav

Package Information

https://launchpad.net/ubuntu/+source/libav/4:0.7.3-0ubuntu0.11.10.1
https://launchpad.net/ubuntu/+source/libav/4:0.6.4-0ubuntu0.11.04.1

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